package com.loren.oauth.handler;

import com.loren.oauth.data.constant.DataConstant;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.core.AuthenticationException;
import org.springframework.security.web.authentication.AuthenticationFailureHandler;
import org.springframework.stereotype.Component;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class CustomLoginFailureHandler implements AuthenticationFailureHandler {

    @Override
    public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response, AuthenticationException exception) throws IOException, ServletException {

        String message;

        if (exception instanceof BadCredentialsException) {
            message = "账号或密码错误";
        } else {
            message = "登录失败";
        }

        request.getSession().setAttribute(DataConstant.ERROR_LOGIN_FLAG, message);

        response.sendRedirect(DataConstant.AUTH_LOGIN_URL);
    }
}